Melt the ¼ cup unsalted butter over medium heat in a saucepan.
When melted, whisk with the ¼ cup flour until a paste forms. Continue to whisk until roux starts to brown and become fragrant.
Slowly add the 2 cups low-sodium broth and 2 tablespoons drippings while whisking vigorously. Continue to whisk until fully heated.
Taste test for seasoning. Add the Kosher salt & freshly ground black pepper sparingly until desired taste is achieved.
Add other flavor add-ins, if desired and continue to heat for 5-15 minutes.
